Chen Liang, a young man from Qingzhu Village, was originally an orphan adopted by an old Chinese medicine doctor. However, due to a danger in the mountains, he accidentally awakened the inheritance of the thirteen needles of Xuanyuan and the "Qingxin Jue" in the ancestral jade pendant. Only then did he realize that his family had been descendants of the Xuanyuan Needle Sect for generations, specializing in communicating yin and yang, guiding souls to peace, mediating yin and yang changes such as lingering souls and erroneous work errors, and guarding the peace of the world.
His father disappeared many years ago to deal with the "wrong soul" incident, and the letters he left behind guided him on the road to find relatives and inherit the family. Armed with the jade pendant and the Xuanyuan Acupuncture Technique, Chen Liang walked out of the Qingshan Mountains, starting from relieving the souls of his neighbors and gradually coming into contact with the real world of souls and underworld. Along the way, he met partners with different strengths - Su Qingyue, the president of the Su Group who provided support, Chu Yao, a descendant of a martial arts family with strong martial arts, Wen Zhiyu who was good at medicine, Luo Xi who could sense spiritual veins, Shen Qinghan who had the power of sealed containers, and Xia Wanxing who had an innate spirit body.
Everyone joins hands to deal with the imbalance of yin and yang one after another, resolve the obsession of lingering souls, help the yin and yang to complete their mission, and gradually uncover the secrets behind the Chen family's past and the yin and yang order. From Qingzhu Village to the prosperous city, from the human world to the edge of the underworld, Chen Liang used Xuanyuan acupuncture as a blade and the heart of righteousness as a shield. He adhered to the inheritance mission on the way to find his father, and guarded the stability of the world at the intersection of yin and yang. He wrote a passionate legend about responsibility, bondage and perseverance.